JP2002053673A - Sliding material - Google Patents
Sliding materialInfo
- Publication number
- JP2002053673A JP2002053673A JP2000238412A JP2000238412A JP2002053673A JP 2002053673 A JP2002053673 A JP 2002053673A JP 2000238412 A JP2000238412 A JP 2000238412A JP 2000238412 A JP2000238412 A JP 2000238412A JP 2002053673 A JP2002053673 A JP 2002053673A
- Authority
- JP
- Japan
- Prior art keywords
- volume
- sliding material
- sliding
- bismuth
- metal layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 60
- 239000002245 particle Substances 0.000 claims abstract description 52
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 28
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 28
- 229910001152 Bi alloy Inorganic materials 0.000 claims abstract description 23
- 239000000314 lubricant Substances 0.000 claims abstract description 18
- 239000007787 solid Substances 0.000 claims abstract description 18
- 229910052797 bismuth Inorganic materials 0.000 claims description 17
- -1 polytetrafluoroethylene Polymers 0.000 claims description 17
- 229920005989 resin Polymers 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 15
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 abstract description 21
- 229910052751 metal Inorganic materials 0.000 abstract description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052802 copper Inorganic materials 0.000 abstract description 6
- 239000010949 copper Substances 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract description 2
- 239000010439 graphite Substances 0.000 abstract description 2
- 229910002804 graphite Inorganic materials 0.000 abstract description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 238000002156 mixing Methods 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 229920006026 co-polymeric resin Polymers 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000011135 tin Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- PEVRKKOYEFPFMN-UHFFFAOYSA-N 1,1,2,3,3,3-hexafluoroprop-1-ene;1,1,2,2-tetrafluoroethene Chemical group FC(F)=C(F)F.FC(F)=C(F)C(F)(F)F PEVRKKOYEFPFMN-UHFFFAOYSA-N 0.000 description 1
- 101100069231 Caenorhabditis elegans gkow-1 gene Proteins 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Sliding-Contact Bearings (AREA)
- Lubricants (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えばすべり軸受
材料として使用され、ポリテトラフルオロエチレン樹脂
を主成分とし、鉛を含まない摺動材料に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding material which is used, for example, as a sliding bearing material and contains a polytetrafluoroethylene resin as a main component and does not contain lead.
【０００２】[0002]
【従来の技術】例えばすべり軸受材料として、鋼裏金の
表面側に多孔質青銅層を有し、その多孔質青銅層に、合
成樹脂を主成分とした摺動材料を含浸させたものがあ
る。この種の摺動材料としては、例えば特公昭３９−１
６９５０公報に示されるように、ポリテトラフルオロエ
チレン樹脂（以下「ＰＴＦＥ」と略す）に、２０体積％
程度の鉛（Ｐｂ）粒子を配合したものが知られている。
この摺動材料は、Ｐｂ粒子の配合により、低摩擦係数が
得られて摺動特性に優れたものとなる。2. Description of the Related Art As a slide bearing material, for example, there is a material in which a porous bronze layer is provided on the surface side of a steel backing metal, and the porous bronze layer is impregnated with a sliding material mainly composed of a synthetic resin. As this kind of sliding material, for example, Japanese Patent Publication No. 39-1
As shown in Japanese Patent No. 6950, 20% by volume of polytetrafluoroethylene resin (hereinafter abbreviated as “PTFE”)
What blended a certain amount of lead (Pb) particles is known.
This sliding material has a low friction coefficient and is excellent in sliding characteristics due to the blending of the Pb particles.
【０００３】[0003]
【発明が解決しようとする課題】ところで、近年、環境
問題への配慮から、上記のようなＰＴＦＥを主成分とし
た摺動材料にあっても、Ｐｂを含有しないものが要望さ
れるようになった。そこで、本出願人は、ＰＴＦＥを主
成分とし、従来のＰｂに代えて、ビスマス（Ｂｉ）ある
いはビスマス合金粒子を配合した摺動材料を開発し、先
に出願している（特願２０００−２６６７１）。However, in recent years, in consideration of environmental issues, there has been a demand for a sliding material containing PTFE as a main component, which does not contain Pb, as described above. Was. Accordingly, the present applicant has developed a sliding material containing PTFE as a main component and blending bismuth (Bi) or bismuth alloy particles in place of conventional Pb, and has filed an application earlier (Japanese Patent Application No. 2000-26671). ).
【０００４】これによれば、Ｐｂの代替品としてＢｉが
有効となり、特に、Ｐｂと同様に、相手材の表面にＰＴ
ＦＥのコーティング膜（移着膜）を形成する触媒的作用
を呈し、安定した摺動特性を得ることができるのであ
る。ところが、上記したＰＴＦＥにＢｉ又はＢｉ合金を
配合した摺動材料では、耐摩耗特性の面で改善の余地が
残されており、耐摩耗特性のより一層の向上が望まれる
のである。According to this, Bi is effective as a substitute for Pb, and particularly, like Pb, PT
It exhibits a catalytic action of forming a coating film (transfer film) of FE, and can obtain stable sliding characteristics. However, in the sliding material in which Bi or Bi alloy is blended with the above-mentioned PTFE, there is room for improvement in terms of wear resistance, and further improvement in wear resistance is desired.
【０００５】本発明は上記事情に鑑みてなされたもの
で、その目的は、ポリテトラフルオロエチレン樹脂を主
成分とし鉛を含まない摺動材料にあって、良好な摺動特
性を維持しながらも、耐摩耗特性の一層の向上を図るこ
とができる摺動材料を提供するにある。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a sliding material containing a polytetrafluoroethylene resin as a main component and containing no lead while maintaining good sliding characteristics. Another object of the present invention is to provide a sliding material capable of further improving wear resistance.
【０００６】[0006]
【課題を解決するための手段】ＰＴＦＥを主成分（５０
体積％以上）とし、Ｂｉ及び／又はＢｉ合金粒子を配合
した摺動材料は、Ｐｂを含まないものであっても、Ｂｉ
及び／又はＢｉ合金粒子が相手材の表面にＰＴＦＥのコ
ーティング膜（移着膜）を形成する触媒的作用を呈し、
安定した摺動特性を得ることができ、環境を配慮した材
料とすることができる。この場合、Ｂｉ及び／又はＢｉ
合金粒子の配合量を３〜４０体積％とすることにより、
良好な摺動特性を得ることができ、１０〜３０体積％と
することが、より好ましい。尚、Ｂｉ単体の粒子の他に
も、Ｂｉと銀、スズ、亜鉛、インジウム等との合金を使
用することができる。これらの含有量は、０．５〜３０
質量％が望ましい。また、Ｂｉ／Ｂｉ合金の粒径は、１
〜５０μｍ程度とすることが望ましい。Means for Solving the Problems PTFE is the main component (50).
% By volume), and the sliding material containing Bi and / or Bi alloy particles does not contain Pb.
And / or Bi alloy particles exhibit a catalytic action of forming a PTFE coating film (transfer film) on the surface of the partner material,
Stable sliding characteristics can be obtained, and the material can be made environmentally friendly. In this case, Bi and / or Bi
By setting the blending amount of the alloy particles to 3 to 40% by volume,
Good sliding characteristics can be obtained, and it is more preferable that the content be 10 to 30% by volume. In addition to the particles of Bi alone, an alloy of Bi and silver, tin, zinc, indium or the like can be used. These contents are 0.5 to 30
% By mass is desirable. The particle size of the Bi / Bi alloy is 1
It is desirable that the thickness be about 50 μm.
【０００７】そして、本発明者は、種々の試験，研究を
重ねた結果、そのような、ＰＴＦＥを主成分としＢｉ及
び／又はＢｉ合金粒子を配合した摺動材料に、更に以下
のような成分を配合することにより、耐摩耗特性の一層
の向上を図ることができることを確認し、本発明を成し
遂げたのである。As a result of repeated tests and studies, the present inventors have found that such a sliding material containing PTFE as a main component and Bi and / or Bi alloy particles is further added with the following components. It has been confirmed that the addition of the compound can further improve the abrasion resistance, and the present invention has been accomplished.
【０００８】即ち、本発明の請求項１の摺動材料は、５
０体積％以上のポリテトラフルオロエチレン樹脂と、３
〜４０体積％のビスマス及び／又はビスマス合金粒子
と、１〜４０体積％の溶融フッ素樹脂とを含むところに
特徴を有する。That is, the sliding material of claim 1 of the present invention
0% by volume or more of polytetrafluoroethylene resin;
It is characterized in that it contains bismuth and / or bismuth alloy particles of ４０40% by volume and molten fluororesin of 1４０40% by volume.
【０００９】これによれば、溶融フッ素樹脂を配合させ
たことにより、耐摩耗特性を向上させることができ、ま
た摩擦係数を小さくし、さらには材料強度の向上をも図
ることができる。この場合、溶融フッ素樹脂の配合量
が、１体積％未満では、耐摩耗特性の向上の効果が十分
に得られず、４０体積％を越えると、摩擦特性が悪化す
る。より好ましい配合量は、２〜２０体積％である。こ
の溶融フッ素樹脂としては、テトラフルオロエチレン−
パーフルオロアルキルビニルエーテル共重合樹脂（以下
「ＰＦＡ」と略す）や、テトラフルオロエチレン−ヘキ
サフルオロプロピレン共重合樹脂（以下「ＦＥＰ」と略
す）等を採用することができる。According to this, the addition of the molten fluororesin makes it possible to improve the wear resistance, to reduce the coefficient of friction, and to improve the material strength. In this case, if the amount of the molten fluororesin is less than 1% by volume, the effect of improving the wear resistance cannot be sufficiently obtained, and if it exceeds 40% by volume, the frictional characteristics deteriorate. A more preferred amount is 2 to 20% by volume. As this molten fluororesin, tetrafluoroethylene-
A perfluoroalkyl vinyl ether copolymer resin (hereinafter abbreviated as “PFA”), a tetrafluoroethylene-hexafluoropropylene copolymer resin (hereinafter abbreviated as “FEP”), or the like can be used.
【００１０】本発明の請求項２の摺動材料は、５０体積
％以上のポリテトラフルオロエチレン樹脂と、３〜４０
体積％のビスマス及び／又はビスマス合金粒子と、０．
１〜２０体積％の硬質粒子とを含むところに特徴を有す
る。The sliding material according to claim 2 of the present invention comprises a polytetrafluoroethylene resin of 50% by volume or more and 3 to 40% by volume.
Volume% bismuth and / or bismuth alloy particles;
It is characterized by containing 1 to 20% by volume of hard particles.
【００１１】これによれば、硬質粒子を配合したことに
より、より高い硬度の粒子が摺動面に分散することにな
るので、耐摩耗特性を大幅に向上させることができる。
この場合、硬質粒子の配合量が、０．１体積％未満で
は、耐摩耗特性の向上の効果が十分に得られず、２０体
積％を越えると、摩擦特性が悪化する。より好ましい配
合量は、０．５〜１０体積％である。この硬質粒子とし
ては、Ｗ，Ｔｉ，Ｃｒ等の硬質金属や、Ａｌ２Ｏ３，Ｆ
ｅ３Ｏ４，ＣｒＯ２，ＳｉＣ，ＴｉＯ２等のセラミック
粒子を採用することができる。また、この硬質粒子は、
平均粒径が１０μｍ以下のものを採用することができ、
平均粒径が１μｍ以下のものがより好ましい。According to this, the addition of the hard particles causes the particles of higher hardness to be dispersed on the sliding surface, so that the wear resistance can be greatly improved.
In this case, if the amount of the hard particles is less than 0.1% by volume, the effect of improving the wear resistance cannot be sufficiently obtained, and if it exceeds 20% by volume, the frictional characteristics deteriorate. A more preferred amount is 0.5 to 10% by volume. Examples of the hard particles include hard metals such as W, Ti, and Cr, Al 2 O 3 , F
Ceramic particles such as e 3 O 4 , CrO 2 , SiC, and TiO 2 can be employed. Also, these hard particles are
Those having an average particle size of 10 μm or less can be adopted,
Those having an average particle size of 1 μm or less are more preferred.
【００１２】本発明の請求項３の摺動材料は、５０体積
％以上のポリテトラフルオロエチレン樹脂と、３〜４０
体積％のビスマス及び／又はビスマス合金粒子と、０．
１〜２０体積％の固体潤滑剤とを含むところに特徴を有
する。The sliding material according to claim 3 of the present invention comprises a polytetrafluoroethylene resin of 50% by volume or more and 3 to 40% by volume.
Volume% bismuth and / or bismuth alloy particles;
It is characterized in that it contains 1 to 20% by volume of a solid lubricant.
【００１３】これによれば、固体潤滑剤の配合により、
自己潤滑性を高めることができ、耐摩耗特性及び摩擦特
性を向上させることができる。この場合、固体潤滑剤の
配合量が、０．１体積％未満では、摩擦特性の向上の効
果が十分に得られず、２０体積％を越えると、耐摩耗特
性が悪化する。より好ましい配合量は、０．５〜１０体
積％である。この固体潤滑剤としては、グラファイト
（以下「Ｇｒ」と略す）やＭｏＳ２、ＷＳ２、ＢＮ等を
採用することができる。[0013] According to this, by blending the solid lubricant,
The self-lubricating property can be improved, and the wear resistance and friction properties can be improved. In this case, if the amount of the solid lubricant is less than 0.1% by volume, the effect of improving the friction characteristics cannot be sufficiently obtained, and if it exceeds 20% by volume, the wear resistance characteristics deteriorate. A more preferred amount is 0.5 to 10% by volume. As this solid lubricant, graphite (hereinafter abbreviated as “Gr”), MoS 2 , WS 2 , BN, or the like can be used.
【００１４】そして、本発明の請求項４の摺動材料は、
５０体積％以上のポリテトラフルオロエチレン樹脂と、
３〜４０体積％のビスマス及び／又はビスマス合金粒子
と、１〜４０体積％の溶融フッ素樹脂とを加え、更に
０．１〜２０体積％の硬質粒子を含むところに特徴を有
する。The sliding material according to claim 4 of the present invention is:
50% by volume or more of polytetrafluoroethylene resin,
It is characterized by adding 3 to 40% by volume of bismuth and / or bismuth alloy particles and 1 to 40% by volume of a molten fluororesin, and further containing 0.1 to 20% by volume of hard particles.
【００１５】これによれば、溶融フッ素樹脂を配合した
ことによる、耐摩耗特性の向上、摩擦特性の向上、材料
強度の向上の加え、さらに、硬質粒子を配合したことに
より、耐摩耗特性のより一層の向上を図ることができ
る。According to this, in addition to the improvement of wear resistance, the improvement of frictional properties and the improvement of material strength due to the addition of the molten fluororesin, the addition of hard particles further enhances the wear resistance. Further improvement can be achieved.
【００１６】本発明の請求項５の摺動材料は、５０体積
％以上のポリテトラフルオロエチレン樹脂と、３〜４０
体積％のビスマス及び／又はビスマス合金粒子と、１〜
４０体積％の溶融フッ素樹脂とを加え、更に０．１〜２
０体積％の固体潤滑剤を含むところに特徴を有する。The sliding material according to claim 5 of the present invention comprises a polytetrafluoroethylene resin of 50% by volume or more and 3 to 40% by volume.
Volume% of bismuth and / or bismuth alloy particles;
40% by volume of molten fluororesin, and 0.1 to 2
It is characterized in that it contains 0% by volume of a solid lubricant.
【００１７】これによれば、溶融フッ素樹脂を配合した
ことによる、耐摩耗特性の向上、摩擦特性の向上、材料
強度の向上の加え、さらに、固体潤滑剤を配合したこと
により、摩擦特性及び耐摩耗特性のより一層の向上を図
ることができる。According to this, in addition to the improvement of wear resistance, the improvement of frictional properties and the improvement of material strength due to the addition of the molten fluororesin, the frictional properties and the resistance to wear are further enhanced by the addition of a solid lubricant. The wear characteristics can be further improved.
【００１８】本発明の請求項６の摺動材料は、５０体積
％以上のポリテトラフルオロエチレン樹脂と、３〜４０
体積％のビスマス及び／又はビスマス合金粒子と、１〜
４０体積％の溶融フッ素樹脂とを加え、更に０．１〜２
０体積％の硬質粒子及び０．１〜２０体積％の固体潤滑
剤を含むところに特徴を有する。The sliding material according to claim 6 of the present invention comprises a polytetrafluoroethylene resin of 50% by volume or more and 3 to 40% by volume.
Volume% of bismuth and / or bismuth alloy particles;
40% by volume of molten fluororesin, and 0.1 to 2
It is characterized in that it contains 0% by volume of hard particles and 0.1 to 20% by volume of a solid lubricant.
【００１９】これによれば、溶融フッ素樹脂を配合した
ことによる、耐摩耗特性の向上、摩擦特性の向上、材料
強度の向上の加え、さらに、硬質粒子および固体潤滑剤
の双方を配合したことにより、摩擦特性及び耐摩耗特性
のさらなる向上を図ることができる。According to this, in addition to the improvement of the wear resistance, the improvement of the frictional characteristics, and the improvement of the material strength due to the incorporation of the molten fluororesin, the incorporation of both hard particles and solid lubricants Further, the friction characteristics and the wear resistance characteristics can be further improved.
【００２０】[0020]
【発明の実施の形態】以下、本発明を、すべり軸受（ブ
シュ）の材料に適用した実施の形態について、図面を参
照しながら説明する。図１は、潤滑油を用いない無給油
（ドライ環境）で使用されるブシュ１の断面構造を模式
的に示している。このブシュ１は、金属鋼板（一般構造
用低炭素鋼）からなる裏金層２の表面側（内周側）に、
接合性を高めるための銅メッキ層３を介して、銅系合金
からなる多孔質焼結金属層４を設け、更にその多孔質焼
結金属層４の内部及び表面に、後述するような本実施形
態に係る摺動材料５を含浸被覆して構成されている。
尚、この図１では、便宜上、摺動材料５についてのハッ
チングを省略している。また、このブシュ１は、鋼材か
らなるシャフトを受けるようになっている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a material of a sliding bearing (bush) will be described below with reference to the drawings. FIG. 1 schematically shows a cross-sectional structure of a bush 1 used without lubrication oil (dry environment). This bush 1 is provided on the surface side (inner circumference side) of the back metal layer 2 made of a metal steel plate (low carbon steel for general structure).
A porous sintered metal layer 4 made of a copper-based alloy is provided via a copper plating layer 3 for improving the bonding property, and the inside and the surface of the porous sintered metal layer 4 are subjected to the present embodiment as described later. The sliding material 5 according to the embodiment is impregnated and coated.
In FIG. 1, hatching of the sliding material 5 is omitted for convenience. The bush 1 is adapted to receive a shaft made of a steel material.
【００２１】前記摺動材料５は、後の表１に示す実施例
１〜７に代表される成分組成を備えるものである。ＰＴ
ＦＥを主成分（残部；５０体積％以上）とし、１０〜２
０体積％のＢｉ又はＢｉ合金粒子を含むものであり、こ
れに加え、溶融フッ素樹脂としてのＰＦＡ、固体潤滑剤
としてのＧｒ、硬質粒子としてのＷ、Ａｌ２Ｏ３を配合
したものである。尚、硬質粒子の平均粒径は１μｍ、固
体潤滑剤の平均粒径は、１０μｍである。また、比較例
として、先願１〜７は、特願２０００−２６６７１に記
載されたような、ＰＴＦＥを主成分とし、５〜３８体積
％のＢｉ又はＢｉ合金粒子を配合した摺動材料である。The sliding material 5 has a component composition represented by Examples 1 to 7 shown in Table 1 below. PT
FE as the main component (remainder: 50% by volume or more), 10 to 2
It contains 0% by volume of Bi or Bi alloy particles, and additionally contains PFA as a molten fluororesin, Gr as a solid lubricant, W and Al 2 O 3 as hard particles. The average particle size of the hard particles is 1 μm, and the average particle size of the solid lubricant is 10 μm. As comparative examples, prior applications 1 to 7 are sliding materials containing PTFE as a main component and containing 5 to 38% by volume of Bi or Bi alloy particles as described in Japanese Patent Application No. 2000-26671. .
【００２２】ここで、上記ブシュ１の製造方法について
簡単に述べる。まず、１．２ｍｍの厚み寸法を有し、表
面に銅メッキ層３が施された鋼板（裏金層２）上に、銅
合金粉末を厚さ０．３ｍｍで散布し、次いで、還元雰囲
気中で７５０〜９００℃の温度に加熱して銅合金粉末を
焼結した。これにて、裏金層２（銅メッキ層３）上に多
孔質焼結金属層４が得られた。Here, a method of manufacturing the bush 1 will be briefly described. First, a copper alloy powder is sprinkled at a thickness of 0.3 mm on a steel plate (back metal layer 2) having a thickness of 1.2 mm and having a copper plating layer 3 on the surface, and then in a reducing atmosphere. The copper alloy powder was sintered by heating to a temperature of 750 to 900 ° C. Thus, a porous sintered metal layer 4 was obtained on the back metal layer 2 (copper plating layer 3).
【００２３】一方、摺動材料５を構成する材料の混合物
を得る工程が実行される。この場合、所定量のＰＴＦＥ
に、所定量のＢｉ又はＢｉ合金粒子を加えると共に、所
定量のＰＦＡパウダー、硬質粒子、微粒子状の固体潤滑
剤を加え、均一に混合して混合物を得るようにする。そ
して、その混合物を、上記裏金層２上の多孔質焼結金属
層４に含浸被覆させた後、３５０〜４００℃の温度で焼
成を行ない、その後ロール圧延により厚みを均一化させ
る。On the other hand, a step of obtaining a mixture of the materials constituting the sliding material 5 is performed. In this case, a predetermined amount of PTFE
Then, a predetermined amount of Bi or Bi alloy particles is added, and a predetermined amount of PFA powder, hard particles, and fine solid lubricant are added, and the mixture is uniformly mixed to obtain a mixture. Then, after impregnating and coating the porous sintered metal layer 4 on the back metal layer 2 with the mixture, the mixture is fired at a temperature of 350 to 400 ° C., and then the thickness is made uniform by roll rolling.
【００２４】これにて、裏金層２上の多孔質焼結金属層
４に摺動材料５が含浸被覆された平板な材料が得られ
た。しかる後、その材料を所要寸法に切断し、曲げ加工
（巻き加工）を行なうことにより、円筒状のブシュ１を
作製した。このように構成されたブシュ１は、その内周
の摺動面（摺動材料５の面）においてシャフトを受ける
ようになっている。As a result, a flat material in which the porous sintered metal layer 4 on the back metal layer 2 was impregnated with the sliding material 5 was obtained. Thereafter, the material was cut into required dimensions and subjected to bending (winding), thereby producing a cylindrical bush 1. The bush 1 configured as described above receives a shaft on a sliding surface (a surface of the sliding material 5) on an inner periphery thereof.
【００２５】次に、上記摺動材料５の有効性を検証，確
認するために、実施例１〜７の配合の摺動材料、及び、
先願１〜７の配合の摺動材料について、摩擦，摩耗試験
を行った。この試験は、内径２０mm×幅２０mm×肉厚
１．５mmの供試材を用い、荷重５ＭＰａ、速度６ｍ／mi
n 、無潤滑、１００時間の条件で行った。この試験結果
を表２に示す。Next, in order to verify and confirm the effectiveness of the sliding material 5, the sliding materials of Examples 1 to 7 were prepared, and
Friction and wear tests were performed on the sliding materials having the compositions of the prior applications 1 to 7. In this test, a test material having an inner diameter of 20 mm × a width of 20 mm × a thickness of 1.5 mm was used, a load of 5 MPa, and a speed of 6 m / mi.
n, no lubrication, 100 hours. Table 2 shows the test results.
【００２６】[0026]
【表１】 [Table 1]
【表２】 [Table 2]
【００２７】この試験結果から明らかなように、実施例
１〜７の摺動材料は、先願１〜７と比べて、同等あるい
はそれ以下の摩擦係数が得られると共に、摩耗量が十分
に少なくなった。この場合、特に溶融フッ素樹脂として
のＰＦＡに加えて硬質粒子としてのＷを配合した実施例
６は、摩耗量を著しく少なくすることができた。硬質粒
子及び固体潤滑剤の双方を配合した実施例７について
も、摩耗量をかなり少なくすることができた。尚、試験
終了後に、相手軸（シャフト）の表面を観察したとこ
ろ、ＰＴＦＥのコーティング膜（移着膜）が形成されて
いた。また、Ｂｉ単体でなく、Ｂｉと１０質量％のＳｎ
あるいはＡｇとの合金を用いた実施例５，６の方が、摩
耗量を少なくすることができた。As is clear from the test results, the sliding materials of Examples 1 to 7 can obtain a friction coefficient equal to or less than those of the prior applications 1 to 7 and have a sufficiently small amount of wear. became. In this case, in particular, in Example 6, in which W was mixed as hard particles in addition to PFA as a molten fluororesin, the wear amount could be significantly reduced. In Example 7 in which both the hard particles and the solid lubricant were blended, the amount of wear could be considerably reduced. When the surface of the mating shaft (shaft) was observed after the test, a PTFE coating film (transfer film) was formed. Also, not Bi alone but Bi and 10% by mass of Sn
Alternatively, in Examples 5 and 6 using an alloy with Ag, the amount of wear could be reduced.
【００２８】以上のように、本発明の成分組成を備える
摺動材料５によれば、ＰＴＦＥを主成分とし鉛に代えて
Ｂｉ及び／又はＢｉ合金を配合した摺動材料にあって、
溶融フッ素樹脂としてのＰＦＡ、硬質粒子としてのＷや
Ａｌ２Ｏ３、固体潤滑剤としてのＧｒを配合したことに
より、従来のものと異なり、良好な摺動特性を維持しな
がらも、耐摩耗特性の一層の向上を図ることができると
いう優れた効果を得ることができる。As described above, according to the sliding material 5 having the component composition of the present invention, there is provided a sliding material containing PTFE as a main component and blending Bi and / or a Bi alloy instead of lead.
By mixing PFA as a molten fluororesin, W and Al 2 O 3 as hard particles, and Gr as a solid lubricant, unlike the conventional one, it maintains good sliding characteristics and wear resistance. An excellent effect that further improvement can be achieved can be obtained.
【００２９】尚、上記実施の形態では、本発明の摺動材
料をシャフトを受けるブシュ１に適用するようにした
が、様々な用途の摺動部材に使用することが可能であ
り、その際ブシュ（軸受）に限定されるものでもなく、
スラストワッシャやスライドプレート等にも適用するこ
とができる。また、無潤滑環境に限らず、潤滑油中や水
等の液体中で使用しても差支えない。In the above embodiment, the sliding material of the present invention is applied to the bush 1 for receiving the shaft. However, the sliding material can be used for sliding members for various uses. (Bearing) is not limited to
It can also be applied to thrust washers, slide plates, and the like. Further, the present invention is not limited to a non-lubricated environment, and may be used in a lubricating oil or a liquid such as water.
【００３０】その他、本発明は上記実施の形態に限定さ
れるものではなく、溶融フッ素樹脂としては、ＦＥＰ等
を採用することもでき、硬質粒子としても、Ｔｉ，Ｃｒ
等の硬質金属やＦｅ３Ｏ４，ＣｒＯ２，ＳｉＣ，ＴｉＯ
２等の他のセラミック系硬質粒子を採用しても良く、そ
れらを複数種類組合せて使用しても良く、また、同様に
固体潤滑剤としても、ＭｏＳ２、ＷＳ２、ＢＮ等も採用
することができ、さらには、裏金層や多孔質金属層の材
質、相手材（シャフト）の材質等についても上記したも
のに限定されるものではない等、要旨を逸脱しない範囲
内で適宜変更して実施し得るものである。In addition, the present invention is not limited to the above embodiment, and FEP or the like can be used as the molten fluororesin, and Ti, Cr can be used as the hard particles.
Hard metals such as Fe 3 O 4 , CrO 2 , SiC, TiO
May be employed a ceramic-based hard particles 2 such as may be used in their combination plural kinds, also, similarly as solid lubricant, also be employed MoS 2, WS 2, BN, etc. Further, the material of the back metal layer and the porous metal layer, the material of the mating material (shaft), and the like are not limited to those described above, and may be appropriately changed without departing from the scope of the invention. Can be done.
【図１】本発明の実施の形態を示すもので、ブシュの構
造を概略的に示す拡大縦断面図FIG. 1 shows an embodiment of the present invention, and is an enlarged longitudinal sectional view schematically showing a structure of a bush.
図面中、１はブシュ（すべり軸受）、２は裏金層、４は
多孔質焼結金属層、５は摺動材料を示す。In the drawings, 1 denotes a bush (slide bearing), 2 denotes a back metal layer, 4 denotes a porous sintered metal layer, and 5 denotes a sliding material.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 平松 伸隆 名古屋市北区猿投町２番地 大同メタル工 業株式会社内 (72)発明者 柴山 隆之 名古屋市北区猿投町２番地 大同メタル工 業株式会社内 Ｆターム(参考） 3J011 LA01 QA05 SB19 SB20 SC04 SC05 SD01 SE02 SE04 SE06 SE07 4F071 AA26 AA27 AB03 AB06 AB12 AB23 AB27 AE11 AF25 EA01 EA07 4J002 BD151 BD152 DA066 DA067 DC006 DE047 DE117 DE137 DE147 FD206 FD207 GM05 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Nobutaka Hiramatsu, No. 2 Sanage-cho, Kita-ku, Nagoya-shi Inside (72) Inventor Takayuki Shibayama No. 2, Sanage-cho, Kita-ku, Nagoya Daido Metal Co., Ltd. F term (reference) 3J011 LA01 QA05 SB19 SB20 SC04 SC05 SD01 SE02 SE04 SE06 SE07 4F071 AA26 AA27 AB03 AB06 AB12 AB23 AB27 AE11 AF25 EA01 EA07 4J002 BD151 BD152 DA066 DA067 DC006 DE047 DE117 DE137 DE147 FD206 FD207 GM
Claims (6)
チレン樹脂と、３〜４０体積％のビスマス及び／又はビ
スマス合金粒子と、１〜４０体積％の溶融フッ素樹脂と
を含むことを特徴とする摺動材料。1. A slide comprising 50% by volume or more of a polytetrafluoroethylene resin, 3 to 40% by volume of bismuth and / or bismuth alloy particles, and 1 to 40% by volume of a molten fluororesin. Moving material.
チレン樹脂と、３〜４０体積％のビスマス及び／又はビ
スマス合金粒子と、０．１〜２０体積％の硬質粒子とを
含むことを特徴とする摺動材料。2. The composition according to claim 1, comprising at least 50% by volume of a polytetrafluoroethylene resin, 3 to 40% by volume of bismuth and / or bismuth alloy particles, and 0.1 to 20% by volume of hard particles. Sliding material.
チレン樹脂と、３〜４０体積％のビスマス及び／又はビ
スマス合金粒子と、０．１〜２０体積％の固体潤滑剤と
を含むことを特徴とする摺動材料。3. The method according to claim 1, wherein the polytetrafluoroethylene resin comprises 50% by volume or more, 3 to 40% by volume of bismuth and / or bismuth alloy particles, and 0.1 to 20% by volume of a solid lubricant. Sliding material.
チレン樹脂と、３〜４０体積％のビスマス及び／又はビ
スマス合金粒子と、１〜４０体積％の溶融フッ素樹脂
と、０．１〜２０体積％の硬質粒子とを含むことを特徴
とする摺動材料。4. A polytetrafluoroethylene resin of 50% by volume or more, bismuth and / or bismuth alloy particles of 3 to 40% by volume, a molten fluororesin of 1 to 40% by volume, and 0.1 to 20% by volume. And a hard particle.
チレン樹脂と、３〜４０体積％のビスマス及び／又はビ
スマス合金粒子と、１〜４０体積％の溶融フッ素樹脂
と、０．１〜２０体積％の固体潤滑剤とを含むことを特
徴とする摺動材料。5. A polytetrafluoroethylene resin of 50% by volume or more, bismuth and / or bismuth alloy particles of 3 to 40% by volume, a molten fluororesin of 1 to 40% by volume, and 0.1 to 20% by volume. And a solid lubricant.
チレン樹脂と、３〜４０体積％のビスマス及び／又はビ
スマス合金粒子と、１〜４０体積％の溶融フッ素樹脂
と、０．１〜２０体積％の硬質粒子と、０．１〜２０体
積％の固体潤滑剤とを含むことを特徴とする摺動材料。6. A polytetrafluoroethylene resin of 50% by volume or more, bismuth and / or bismuth alloy particles of 3 to 40% by volume, a molten fluororesin of 1 to 40% by volume, and 0.1 to 20% by volume. A sliding material comprising: hard particles of the formula (1) and 0.1 to 20% by volume of a solid lubricant.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000238412A JP3571623B2 (en) | 2000-08-07 | 2000-08-07 | Sliding material |
| GB0117400A GB2367062B (en) | 2000-08-07 | 2001-07-17 | Sliding material |
| US09/915,568 US6864307B2 (en) | 2000-08-07 | 2001-07-27 | Sliding material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000238412A JP3571623B2 (en) | 2000-08-07 | 2000-08-07 | Sliding material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002053673A true JP2002053673A (en) | 2002-02-19 |
| JP3571623B2 JP3571623B2 (en) | 2004-09-29 |
Family
ID=18730116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000238412A Expired - Fee Related JP3571623B2 (en) | 2000-08-07 | 2000-08-07 | Sliding material |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6864307B2 (en) |
| JP (1) | JP3571623B2 (en) |
| GB (1) | GB2367062B (en) |
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| KR100921408B1 (en) | 2009-02-20 | 2009-10-14 | 주식회사 봉성비에스 | Sliding bearing using sintering of cooper and teflon and method for manufacturing thereof |
| JP2012062860A (en) * | 2010-09-17 | 2012-03-29 | Hitachi Constr Mach Co Ltd | Sliding surface structure of hydraulic rotary machine, and method for forming composite material film provided on sliding surface structure of hydraulic rotary machine |
| JP2019100350A (en) * | 2017-11-28 | 2019-06-24 | 大豊工業株式会社 | Slide member |
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|---|---|---|---|---|
| JP4123337B2 (en) * | 2002-01-25 | 2008-07-23 | Ｎｏｋ株式会社 | Flexible coupling |
| JP2004115577A (en) * | 2002-09-24 | 2004-04-15 | Daido Metal Co Ltd | Sliding composition and sliding member |
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| JP4582094B2 (en) * | 2004-07-20 | 2010-11-17 | 千住金属工業株式会社 | Sliding material and manufacturing method thereof |
| ATE486827T1 (en) * | 2004-12-30 | 2010-11-15 | Freni Brembo Spa | MOLDED COMPOSITE |
| US8931957B2 (en) * | 2007-08-24 | 2015-01-13 | Ggb, Inc. | Metal-backed plain bearing |
| DE102008055195B4 (en) * | 2008-12-30 | 2013-02-28 | Federal-Mogul Wiesbaden Gmbh | Sliding element and method for its production |
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| JP6091961B2 (en) * | 2013-03-29 | 2017-03-08 | 大豊工業株式会社 | Sliding member and plain bearing |
| DE102013227188A1 (en) * | 2013-12-27 | 2015-07-02 | Federal-Mogul Wiesbaden Gmbh | Self-lubricating thermoplastic layers with addition of PTFE with polymodal molecular weight |
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| JPS61261396A (en) * | 1985-05-16 | 1986-11-19 | Daido Metal Kogyo Kk | Sliding material having excellent frictional properties |
| DE3815264A1 (en) * | 1988-05-05 | 1989-11-16 | Kolbenschmidt Ag | MATERIAL FOR COMPOSITE BEARINGS AND METHOD FOR THE PRODUCTION THEREOF |
| DE3815265A1 (en) * | 1988-05-05 | 1989-11-16 | Kolbenschmidt Ag | MATERIAL FOR COMPOSITE BEARINGS AND METHOD FOR THE PRODUCTION THEREOF |
-
2000
- 2000-08-07 JP JP2000238412A patent/JP3571623B2/en not_active Expired - Fee Related
-
2001
- 2001-07-17 GB GB0117400A patent/GB2367062B/en not_active Expired - Fee Related
- 2001-07-27 US US09/915,568 patent/US6864307B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007169596A (en) * | 2005-11-28 | 2007-07-05 | Ngk Spark Plug Co Ltd | Seizure-preventing agent, sensor and sensor-attaching structure |
| US8518862B2 (en) | 2005-11-28 | 2013-08-27 | Ngk Spark Plug Co., Ltd. | Anti-seizing agent, sensor and assembly including sensor |
| KR100921408B1 (en) | 2009-02-20 | 2009-10-14 | 주식회사 봉성비에스 | Sliding bearing using sintering of cooper and teflon and method for manufacturing thereof |
| JP2012062860A (en) * | 2010-09-17 | 2012-03-29 | Hitachi Constr Mach Co Ltd | Sliding surface structure of hydraulic rotary machine, and method for forming composite material film provided on sliding surface structure of hydraulic rotary machine |
| JP2019100350A (en) * | 2017-11-28 | 2019-06-24 | 大豊工業株式会社 | Slide member |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2367062A (en) | 2002-03-27 |
| JP3571623B2 (en) | 2004-09-29 |
| US6864307B2 (en) | 2005-03-08 |
| US20020037992A1 (en) | 2002-03-28 |
| GB0117400D0 (en) | 2001-09-05 |
| GB2367062B (en) | 2002-11-13 |
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